<script setup lang="ts">
// imports

import { useToast } from "~/composables/global/useToast";

// types

type Props = {
    modelValue: ServerFile[];
    loading?: boolean;
};

type Emits = {
    "update:modelValue": [value: any];
    change: [value: File];
};

// props

const props = defineProps<Props>();

const { modelValue } = toRefs(props);

// emits

const emit = defineEmits<Emits>();

// state

const { addToast } = useToast();

const dropZoneRef = ref<HTMLDivElement>();
const fileLimit = 1024 * 1024 * 2;

// methods

const onDrop = (files: File[] | null) => {
    if (modelValue.value.length < 3 && files) {
        files.forEach((file, index) => {
            if (file.size > fileLimit) {
                files.splice(index, 1);
                addToast({
                    message: "حداکثر حجم فایل 2 مگابایت می باشد",
                    options: {
                        status: "error",
                    },
                });
            }
        });
        if (files.length > 3) {
            emit("update:modelValue", [...files.slice(0, 3)]);
        } else {
            if (modelValue.value.length + files.length <= 3) {
                files.forEach((item) => {
                    emit("change", item);
                    resetFileDialog();
                });
            } else {
                addToast({
                    message: `مجاز به آپلود ${
                        3 - modelValue.value.length
                    } فایل دیگر هستید`,
                    options: {
                        status: "error",
                    },
                });
            }
        }
    } else {
        addToast({
            message: "محدودیت تعداد را رعایت کنید",
            options: {
                status: "error",
            },
        });
    }
};

const { isOverDropZone } = useDropZone(dropZoneRef, {
    onDrop,
    dataTypes: ["image/jpeg", "image/png", "image/jpg"],
});

const {
    open: openDialog,
    onChange,
    reset: resetFileDialog,
} = useFileDialog({
    accept: "image/*",
    directory: false,
});

onChange((files: any) => {
    let arr: File[] = [];
    Object.keys(files).forEach((_, index) => {
        arr.push(files[index]);
    });
    onDrop(arr);
});

const removeAttachment = (id: number) => {
    let target = modelValue.value.findIndex((i) => i.id == id);
    const clone = [...modelValue.value];
    clone.splice(target, 1);
    emit("update:modelValue", clone);
};
</script>

<template>
    <div class="flex flex-col w-full h-max gap-5 pt-8">
        <div
            ref="dropZoneRef"
            @click="openDialog()"
            class="bg-slate-50 relative flex-col-center w-full transition-all text-black/50 gap-3 h-[20rem] border border-dashed rounded-xl cursor-pointer select-none"
            :class="{
                'border-black': isOverDropZone,
                ' border-slate-300': !isOverDropZone,
                'pointer-events-none': loading,
            }"
        >
            <Icon
                :name="
                    loading
                        ? 'svg-spinners:ring-resize'
                        : 'bi:file-earmark-arrow-down'
                "
                size="32"
                :class="loading ? '' : ''"
            />
            <p class="font-bold text-dynamic-primary text-sm lg:text-[1rem]">
                برای آپلود کلیک کنید یا فایل خود را اینجا بیاندازید
            </p>
            <p class="text-xs font-semibold">فرمت مجاز : jpg, png, jpeg</p>
            <p class="text-xs font-semibold">تعداد فایل مجاز : 3 عدد</p>
            <p class="text-xs font-semibold">حداکثر حجم فایل : 2 مگابایت</p>
        </div>

        <ul
            v-for="(item, index) in modelValue"
            :key="index"
            v-auto-animate
            class="flex flex-row-reverse items-center justify-between w-full px-2 animate__animated animate__fadeIn"
        >
            <NewAttachment
                :id="item.id"
                :size="item.size"
                :name="item.name"
                @delete="removeAttachment"
            />
        </ul>
    </div>
</template>
